(Physical robots) Case 2: (Filetype: wmv) Left robot has only camera, using
it to calculate relative localization to right robot; right robot communicates its global
position (using laser localization), helping left robot reach goal (2004)

(Physical robots) Case 3: (Filetype: wmv)
Left robot has no sensors; right robot uses its camera and laser localization to communicate
left robots' global position to the left robot; after left robot reaches goal, right robot
moves independently to goal (2004)